Threaded hosels

sdandrea1

I shafted some Mizuno irons a few years back and when the heads arrived, I noticed that the hosels were threaded. My first thought was that would help the hosel/shaft bond. Since then I have used a 3/8" tap to cut very shallow threads in .370 hosels before assembly. Don't know if it hurts or helps. Never had one come apart. Your thoughts?

Par4QC

sdandrea1 the hosels were threaded

SMT driver heads were like that. And a few other companies did their drivers only also.

scotts33

Infiniti Golf used to use threaded hosels and when I was in Infiniti dealer I built a lot of them and never had any issues. I don't see the downside. It's kinda like when we dimpled steel iron shaft tips to create a void for a better bond. Great epoxy has done away with all these kinds of needs. Pinned shafts now we're talking! ☺

Par4QC

scotts33 Pinned shafts now we're talking!

I once had a fella telling me how hard a time he was having pulling shafts from a set of irons. Said they were older and must have used some strong epoxy; he had turned them blue with heat. I said if they are that dark, the pins should be showing, and to just punch them out. Talk about someone almost shitting their pants, when you tell them something. 😆

ode

I've seen it at the top of the hosel, but not all the way down.

fatshot

Old....I mean REALLY old Spalding irons were threaded and took special shafts that were threaded as well. They
were left-hand thread, so each time you hit a shot, I suppose you were tightening the threads a fraction. They used glue of some kind as well, but this was before epoxies. Spalding probably did this for the same reason several
manufacturers (Hogan, for example!) pinned their shafts to the heads. The biggest problem with removing those
Spaldings heads/shafts was just knowing that's what they had done. Once you knew to turn the heads clockwise
after heating, it was not usually a problem.

sdandrea1

I have noticed also that if the fit is snug, I can actually screw the shaft into the head.

bad9

I recall from the old Shoptalk days that Richard ? a retired machinist talked about threading all the hosels of clubs he built.